Some minor fixes #485

Job	Run time
Lint	48s
Tests (3.9, git+https://github.com/pastas/pastas.git@v0.22.0)	1m 44s
Tests (3.9, git+https://github.com/pastas/pastas.git@v0.23.1)	1m 57s
Tests (3.9, git+https://github.com/pastas/pastas.git@v1.0.1)	1m 55s
Tests (3.9, git+https://github.com/pastas/pastas.git@v1.4.0)	2m 9s
Tests (3.9, git+https://github.com/pastas/pastas.git@dev)	3m 4s
Tests (3.10, git+https://github.com/pastas/pastas.git@v0.22.0)	1m 48s
Tests (3.10, git+https://github.com/pastas/pastas.git@v0.23.1)	2m 0s
Tests (3.10, git+https://github.com/pastas/pastas.git@v1.0.1)	1m 49s
Tests (3.10, git+https://github.com/pastas/pastas.git@v1.4.0)	1m 57s
Tests (3.10, git+https://github.com/pastas/pastas.git@dev)	3m 4s
Tests (3.11, git+https://github.com/pastas/pastas.git@v0.22.0)	1m 41s
Tests (3.11, git+https://github.com/pastas/pastas.git@v0.23.1)	1m 47s
Tests (3.11, git+https://github.com/pastas/pastas.git@v1.0.1)	1m 47s
Tests (3.11, git+https://github.com/pastas/pastas.git@v1.4.0)	1m 54s
Tests (3.11, git+https://github.com/pastas/pastas.git@dev)	2m 44s
	32m 8s

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